Today I have installed a Fedora 21 on an sdcard for my Wandboard Quad.

But I had problem with u-boot.
I have follow the doc on fedora wiki :http://fedoraproject.org/wiki/Architectures/ARM/F21/Installation
But after setting up the sdcard, the board don't want to start.
I didn't have output on serial output with the u-boot.imx from the fedora minimal archive.

After build u-boot from the head of u-boot-imx repository (and apply this patch :https://www.mail-archive.com/u-boot@lists.denx.de/msg167764.html), I was able to boot a fedora 21 minimal system.

It's a know problem ? Someone else have the problem ?

I don't have tested with upstream uboot v2015.1, peraps it's can be a good thing to update the version of uboot.